Over the past several decades a need has arisen to enable humans to communicate with machines in
order tocontrol their actions or toobtaininformation. Initial attempts at providing human-machine
communications led to the development of the keyboard, the mouse, the trackball, the touch screen,
and the joy stick. However, none of these communication devices provides the richness or the ease
of use of speech which has been the most natural formof communication between humans for tens
of centuries. Hence, a need has arisen to provide a voice interface between humans and machines....